True lover's knot (Paris quadrifolia) illustration. Digitally enhanced from our own book, Medical Botany (1836) by John…
https://www.rawpixel.com/image/327013/free-illustration-image-paris-true-lovers-knot-paris-quadrifolia-watercolor-flowerFree Image from public domain license
Cypripedium oenanthum superbum from Reichenbachia Orchids (1888-1894) illustrated by Frederick Sander (1847-1920). Original…